Battery charger



FIG. 1 is a front view of a battery charger.

FIG. 1A is an enlarged detail view of a portion of the battery charger shown in FIG. 1; and,

FIG. 2 is a rear view of the battery charger shown in FIG. 1.

FIG. 3 is an enlarged top perspective view of a portion of the battery charger shown in FIG. 1.

The present application is directed to the shape and contour of the design illustrated in the drawings. A portion of a housing and a portion of an indicator of the battery charger are illustrated in solid lines. The broken line showing of the environment is for illustrative purposes only and forms no part of the claimed design. The borken lines which define the boundaries of the claimed design form no part thereof. 

We claim the ornamental design for a battery charger, as shown and described in the figures. 